Tire rim



April 5 19.27. 1,623,307

R. C. COLEMAN TIRE RIM Filed May 5, 1924 Meri klem/ Patented Apr. 5,1927.

i tiges? Roemery o. COLEMAN, or wrivn GAP, PENitsrsrmnivrn.f` y

TIRE RIM.

Application filed May 5,

My invention relates to demountable rims for vehicle tires, and theobject of my invention is to provide an improved rim ot the classmentioned which will admit of rapid change of the tire. A further objectof my invention is 'to provide an improved rim of the class mentionedadapted tor use in conjunction with the ordinary wheels and tires. Afurther object ot my invention isV to provide a device of the classmentioned, equipped with means for securing and maintaining the parts inoperative position. Further objectsof my invention are to provide adevice of the `character mentioned which shall not add materially to thecost of production over the ordinary demountable rim, and which will notreadily get out of order. Other objects will appear hereinafter.l yTVith these objects in View my invention consists generally in a tirerim comprising a pair of liingedly connected sections,the non-hingedabutting ends being provided with means for expanding the rim, and theabutting ends beingbeveled and provided with improved means co-operatingwith the adjacent ends to hold the parts in extended position. Myinvention further consists in various details of construction andarrangements of parts all as will ybe fully described hereinafter andparticularly pointed out in the claim.

My invention will be more readily understood by reference to theaccompanying drawings forming a part of this specification and in which-Fig. 1 is a side-elevation of a demountable i'im embodying my invention;

Fig. 2 is a detail elevation upon an en* larged scale, illustrating theabut-tingv Vends of the sections and the parts associated therewith;

Fig. 3 is a plan viewot the same;

Fig. 4 is a detail section on the line 4-4 of Fig. 3 upon a muchenlarged scale, and

Fig. 5 is an enlarged transverse section through the device.

Referring now to the drawings 1 indicates the rim, which may be of anyordinary or preferred cross section. Incarrying out myl invention, Iform the rim of two sections 2 and 3, respectively, the latter beingpreferably smaller than the former, usually consisting of aboutone-third of the circum- 1924. Serial No. 710,992.

ference, althoughl do not limit invention to such proportions.` vThesections@ and 3 are hingedly connected at 4; `any preferred hingedconstruction'being employed.

.The normally abutting tree ends 5 and 6 are equipped with means forholding the ends iii operative position and with means lor expanding therimai'tei" the tire has. been placed thereon. It will be noted that thead]acentl ends are correspondingly beveled as at 7', and that the bevelis such as to permit thesection 3 to swingl inwardly. The

end 5, on its inner face is provided with one or more sliding bolts 8 8,which, when in the position shown in the drawings,iwill envgage'underthe end 6 and prevent the section 3 from swinging on the hinge 4. Anymeans may be employed Jfor holding the bolts in projected position, suchas tapscrews 9.

10 indicates an expansion bolt, pivotally mounted as at 11 between apair of lugs 12. on the end 5.y The end 6 is provided with acorresponding pair of lugs 13 to receive the bolt between them; and anut 14, threaded on the bolt 10, impinges against the ends of the lugs13 and provides means whereby the rim may be expanded after the sectionsarev in normal or operative position. To

4prevent thejbolt 10 from slipping froml be-k inwardly and preventspinching the tireV when the hinged section is moved to normal tposition. It is obvious that when `with a riin of the construction abovedescribed that a tire may be readily and quickly removed and' quicklyreplaced, the only tool necessary being a wrench for the nut 14 and ascrew driver for the tap-screws 9, if such are used for the lockingmeans for the ybolts 8. The lugs 12 and 13 are adapted to llit in smallrecesses in the telly of the wheel, whichrel` cesses will not be ofsucient size to weaken the telly, but which arrangement provides` meansto prevent the rim from creeping on' the wheel and tearing out ordamaging the inner tube valve. 1

lIolajm: Said lugs, *said lugs being,- provided With- `A)demountahle rnihaving the adjacent transverse notches, and a bar on Said bolt i endscorrespondingly bevelech an expansion resting in said notches and heldtheiein by l0v bolt -piyoted -to said rim ladjacent one en'd said nut,substantially aS described. 5 thereoijarpair of lugs on the other end ofIn testimony whereof I have signed my 1 the rim adapted to receivesaidholt hetweenk name to this specification, i* them, a nut' on saidiboltimpinging against ROBERT C. COLEMAN. i

